The neck is a
a. first class lever
b. second class lever
c. third class lever
d. fourth class lever

Answer;

-First class lever

The neck is a first class lever.

Explanation;

-A lever is a simple machine that uses an applied force to rotate a rigid rod about a fixed pivot point/fulcrum with the purpose of lifting a weighted load. There are three major classes of levers, each defined by the location of the applied force or effort in relation to the load or resistance and the fulcrum.

-A first-class lever has its fulcrum placed between the applied force and the load. An example of a first class-lever is a seesaw.

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: